Steam-generator.



B. F. SILLIMAN.

STEAM GENERATOR.

APPLICATION FILED JULY 6, 1908.

943,277, Patented Dec. 14, 1909.

Wm i figa? BENJAE'IN F. SILLIMAN, UF CLEVELBJTB, CS.

STEGENERATR.

943,277. Speciicetion of Letters Paten t.

Application tiled Silly G, 1965;?. Serial io. M935 To all whom it may concern.'

lie it known that L Benin-linx l?. Sinti' um', :i citizen ot' the nited States, resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and usetul Improvement in Steniii-Generators,of which the follmving is a specification. the print-iple of the invention being herein explained and the best mode in which I have conteni- .plated applying that'principle. so as to dietinguish it from .other inventions.

The present invention relating as indicatedto steam generators liasinore particular regard to generators of the tiasher type, such as are generally used in connection with motor cars and boats.

Among the objects of the present inven tion niay be enumerated the attainment of increased economy and capacity without correspondingly enlarging the generator over present types, the provision ot a generator, the tubes ot' which may be eii'eotually drained, and an improved arrangement of therniostatic control. or regulatingT device(y in connection with such generator.

' To -the accomplishment of the above and related objects said invention. then, consists in the ineens hereinafter fully described and particularly pointed out in the claims.

The annexed drawing and the followingr description set forth in detail certain mech-V anism embodying the invention. auch die closed ineens constituting', however. but one ofv various mechanical forms innxhieh the principle of the invention may beneetl.

In said annexed drawing: Figure l, is a central vertical section ot a steam generator embodying my several improvements: i. ig.' 2 is partly a horizontal section and partly a plan View of the saine, the section being taken on the line 2--2. Fig. l; and Fig. detail of the construction of said generator taken on the The source of heatffroin my generator is shown in the forni of a gas burner A, which is of Well known construction, and accordingly, does not. require any detailed description.l lt will be understood, of course, that in place of such burner any Suitable heating` means may be employed. The gas :tor the burner Supplied through a eontroliing Valve a operated by means et a theiinostntt:

ineniber ii.

etaiuieily u regulating device. to which more iiia'ijtiifulai referenee will be marie nreeent Supported above the lnuner described irs the easing' ii. ot 'the generator. huub tta ing,l comprising; a imver member i oi 5F eral annular torni. the upper portion which is oi couetricteil vrees-sectional area. The details ot' eonetriu'tiou oi .euch canineT are tor present purpo a inatier i indit ference. although aa shown the einer unile Zi thereof are pret'erabljv doni. and a enitn able heat insulating matta-iai 7,1* interposed therebetween. tiuriuounti': .5 eueh loner 'faeing member is au upper member i''g" a cover tor. and lateralljY iii/ tion l) ot said lower uieniber 't referred to as beingl ot cousti'ii-,ted ero.-eeeional ai The lateral Walla li ot e fi upper arri member llo not quite` floue flown ont@ lower ineinbez'. but nn'opening f' zvteiuii gases turni#L ne eil by the burner. and i, end will ordiuarilv. 1n the completer :urine ture. be connected uit h a euitabie here ehoa'n l whereby .enel einen may charged, ae uill be readily untiei'rstof The Several coil nt pipe coinikioeiniz' generator proper are disposed within l tliti'erent portions ot the easing' ii juni de Ierribed, in the manner non to be eigpli in the lower portion oi the uiain are provided a oi posed coilsy C ot pipe .serially eonnfewf as to drain treelj,7 toward the outlet opel at the bottoni. in other worde, there are risers or other connections eniploj.v tween the respective eoib; that nii. traps tor the retention olf water or o@ ier eondeneed liquid therein, but inetead the euceeeeii'e coils are in eti'ect a Single continuous length of pipe wound about troni ein cumterenoe to center and troni center to eircurnferenoe. Continuous Vith the upper, moet ot the oeils C in euch lower eaeing member is a similar set eri coils C oi emaller diameter anitorining with the diameter et the iconetrieted portion 7, ot said aan e member, but in their general afrrangeniein and inode or conneeton corresponding f i, .m ,i i. th errangeinentand eonneff to drain downwardly lo the outlet opening c ot' the generator.

The number ot' coils within the respective portions ot the casing may obviously be' varied from that shown without departiijig.-4 from the spiritot' the invention. lshould.

call attention, however, to the desirability of varying the size ot' the ,pipe entering into the. coilsl in such compartments so that the pipe ot` larger diameter will be t'ound in the lowermost coils'within the main compartmenty of the lpwer casing member B, while those located in the constricted portion b ot' said member and also in the annular chamber surrounding such portion, are ot' considerablyY smaller diameter, the sizeof the pipe, in other words, gradually diminishing from the steam outlet to the water inlet. Thus` tor example, where the number of coils is substantially as shown, I should malte, the two lowermost coils in the main easing member ot' inch diameter, the two succeeding coils of :E inch diameter, the next ot' inch diameter, while the coils in the constricted portion of such lower member and in the annular chamber are of 1L inch diameter.

The Water for the generator is supplied at what has been referred to as the inlet ,opening c, so that it will .have to pass, as will be obvious, around and around through the coils C2 in annular chamber b until it reaches the ,highest point in such coils, whence it passes lit over and takes a downward course through tithe small coils C', and then the large coils 2, of the respective portions of the lower ,casing member, until it finally reaches the ioutlet opening c. Throughout the path ivhich it: thus traverses there will be flowingr 'n an opposite direction the heating medium,

peciica. ly the heated gases arising from the i iiiiier A. The number and ar angement ot oils is designed to be such that the Vater )ending its passage through the annular liamberwill be heated by these gases sub- ,htantially to the'poi'nt of boiling, so'tliat as t tlows over into the smaller coils it will be ashed into steam, and the steam thence assing downwardly into the regular coils is uperheated to thedesired degree, in which condition it passes out by way of the outlet c and the steam supply pipe to the engine.

` asbestos.

steam as it passes over into the correspondin0"eoils. The series of coils in the lower portion ot such member finally serve to store the steam thus provided in an adequate amount to prevent the generator, and par-l ticularly this portion thereof, from ever be,

eenling chilled by a sudden rush of water such as otherwise might be induced by ccssive demands for power.

Allusion has been made to the use of a thermostatic regulator for controlling the supply of t'uel to the burner ot the generator. The general features of construction ot' the thermostat as well as ot the method of con` trol illustrated in connection therewith are set up and claimed in my eo-pending application Serial No. 428.043. tiled April 20. i908. Certain details otl improvement. however. in the thermostats structure may be here noted. A feature common in such previous structure and the one. here disclosed is the utilization ot the lower terminal portion t ot the generator coil for the thermosensitive element.y In the tirst instance I supported the fixed end of this thermo-sensitive element directly from the generator casing; in lieu of this arrangement I here propose to support the same from a' rigid external supporting member I), preferably annular in form and surrounding the lower portion of the generator casing, from which, however. it is'desirably insulated by a layer ot To impart the rigidity referred to the member is preferably made of T crosssection, suitable apertures (Z fl being pro vided therein, the one for the rgception of a plug Z2 whereby the corresponding portion of tube C is 'ti-Xedly secured thereto, the other to slidably support the other end of such tube and the operative element, in the form of control valve J3, connected therewith. Such valve serves to operate fuel-control valve through a suitable pressure inedii'nn and connecting arts of no direct in- -terest here, all being ully set forth in .the

application identified above.'

It should be obvious, without remarlr,'that the arrangement ot supporting means just described may be utilized in connection with the more familiar form of Aindependent therinostatic element just as vwell as with the one'- e iiewn; :flieg .the iiiliieuini' e'ppgiiziue in n .m gen'imuz he eemiirmiimi 135 erieieieci by ixireelement is im prossimi my of ive-Min:y ezine', e dwing :iM-we ihr .w im,

e magie? "udiii'ei'ence, und ai phi lily of eeiie ef p' j Q'fhe nifdes of slppijfing the Apincipie fseiizaiy and disposed in pau-L1 w e my' invention me be employed insefifi of puri wii'iwut seid mixing. said e me one expianedehzmge being mnd: e iieeiy from ixe pein; ef jizmf gime 'the ma. 4lRiem herein iiiseioeed, pwtime@ veils ieeewi rfiiin anni' {hf-se ieffeieii lvided, the mea stated by any ene ei? 'die ii'idieiit said easing;

*eiowing eieims @if ef equiviien in miei (i. )fu :a 121m gzvxwiufnx the mmimzifm siied ineens be en'ipleyd, v m lmiiingf ine-(m5. :i zeilig :aimi'e iii@ same 00in-i oui', amifiie`- 1w ing; :m lippe? 'gmit'iim of l'esiiiceii wie- '75 iinety daim my i v' ,n a Seam gemeenten 'the een i heating means, @Ming eiiove sa ne me und aimait mail rifmivef vm having au uppei' peiieii off -esiieed cioee- "fi 'them-eil :mid miie. draining; ire; eedifonei ande piu lziii'jy of connected eiiiex" fiiieetiun irem ihe. im m le 1M Cei?" of pipe dispeed iiitiiin Said caisiuggand bei in theee iocner rwiiiii': seid about such festi'ieiieci periiim there() 4i {umtsumh reeuiewi lim-M012. soils being se iimngec'i :mii cezmeeied imi ggezwieioig iii-z: eemhiuub 2i) 'iii/g. d Acien of flew heieiii'eugii upabove rive Wmdv 'from he Water iniei through the i @efe e isposed wiehout seid Casin imei henee dewaward@T 'through ihose Within saiii eeeing toifhe steam euile.

2. In e steam geneieim', die eembineieii 0f heating means, a :livoi'e die exime iifiviug am upper portion e5 reeiieeai are I sectional area, a "yhmiiiiy of eemieeeci coii., of pipe dispose Wiiiin snif: easing and 3G about such ressfeed periou, and e easing member incosine :meh re ic'efi porien and the coils theme tout, u" y he. heet .ing medium is eonwfied downWardiy5 szzici eeiis 35 :m eonneeed @isf i,

therethrough is eppee f ing medium. 3. in :i seiim of 'ieeing meen '1G having; am uf per puede Seetonei ;1z\ 1,.:n1ii e piu ai pipe (renne-ei v,

'We'dijf from ie amie? iixie'c ihre., L ing the direction of ieiv hreugh said Cei* eeiis disposed Wii'heu Seid easing :me ti." being oppoeie i@ iim of euch heating me" feiafmi'eriiiy in suceession ii'ough hoee diem, and seid eeii's diei-.ning freely' iom 'hin he ,uppe and lower pertiens off Seid point of ju' ion bei Ween these dispesesi @e easing fo *tile steam outie,

L i'he ree'tiieteu portion, ef .mid iewei cs- Ln eeem generaoi' he combination ing :md in di ennuie? chamber, i0 the of heeting ineens, a easing' above ihe Same wete? ink-'L and Seam euiet, respectiveiy. Comprisizge' e lower member having an uppei 9. In :i steam genereior, The cembineien p'ion of restricted crossseeienei area and of heating mesme a Casing above the Seme an upper member ineiesinf such reereted having an upper portion of ieeii'icted cree@ pei-tion of'said imi-ef member, whereby he sectional aren, and :1 plurality ef cenneeted 15.22;, 'leaving' medium is conducte upwardly and coiis of pipe disposed within said easing :mii 'ilen dewnwardiy, and ey phimiity of eoiis of about such resriced pextien lieieu, he ipe seri-any cenneee. and disposed Wihin diameer Gf the pipe lying Wiihin he ff; Ning yie espeetive poriime eff Suid ewei casing being; iz'uger hmi that of ihe pipe :livelli emi in he ammini chamber between the lab Such l'eeh'ctefi pol'fieu, and :mid coils heine` 25 tei" auf? said upper casing'. the dieetiee 0f S0 :ii'ninged :1nd emmeeed i'nil' i'he dii-eeiew hiougfi'i coils .being 'tappo-Site 'm tion of ow herethmugh is upvmx-Clly 'from time misi-Ch heating meeiim'l. the 'eter iniet hr'eugh ih@ mils disposed \\ithout`said easing and thence downwardly through those vvthin said eaSih-g to the steam outlet.

l0.' ln a steam generator, the combination o1" heatlng 1111111115,Y a easing above the same having an upper port ionl ot' restricted crosssta-tional area. and a plurality of coils ot' pipe vonneeted serially and disposed in the respectieve portions of said easing and about such reslttrieted portion7 the` pipe in such restricted portion being of smaller diameter than that in the main portion of said casing, and that abouf` such restricted portion being of smaller diameter than that within.

11. In a Steam generator the combination ot' heating means, a easing above the same comprising a lower member having an upper portion of restricted cross-sectional area and an upper member inelosing such restricted portion of Said lower member. whereby the heating medium is conducted upwardly and then downwardly, and a plurality ot' coils of pipe serially connected and disposed within the respective portions of Said lower easing and in the. annular chaluber between the latter and said upper cas ing, the direction of flow through said coilsl being opposite to that of such heating Inedium, and the diameter of the pipe in the coils decreasing gradually from the steam outlet to the water inlet.

Signed by 111e, this 3rd day of July,y 1903.

BENJAMIN F. SILLIMAN. Attested by- D. T. Davlns, JNO. F. OnnLiN. 

